Compact fluid actuated working cylinder with spring loaded tensioning member

US5022311A · kind A · utility

Assignee

• WABCO Westinghouse Steuerungstechnik GmbH & Co. · DE

Inventors

• Norbert Fortmann · Hannover, DE
• Helmut Gottling · Altwarmbüchen, DE
• Hans-Friedrich Meyer · Gehrden, DE
• Rudolf Moller · Gehrden, DE
• Gerhard Scharnowski · Gehrden, DE

Key dates

• Filing date: Mar 20, 1990
• Grant date: Jun 11, 1991
• Expiry date: Mar 20, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/18992
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A compact fluid actuated working cylinder is disclosed having a cam driven by a piston via a flexible tension member. At the ends of the cylinder housing there are deflection pulleys for providing continuous tension for the tension member. The pulleys are each mounted on pulley supports which extend from secondary bores in the main cylinder housing. The pulley supports are spring loaded and urge the two pulleys away from the cylinder housing and each other. The pulley supports are preferably rectangular in cross-section to protect against torsion.